Author Topic: Finding a short  (Read 3573 times)

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Offline matchanu

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Finding a short
« on: October 04, 2007, 10:38:12 AM »
I see this posted a lot, "My main fuse keeps blowing".

Well, I had the same issue. As soon as I turned the ignition switch, the main fuse would pop.

Now to find the cause.

Rather than tearing the entire bike apart, disconnect the main parts first.

The right control wires, then left, sub harness assembly, etc..etc..


After you disconnect one assembly, put in a fresh fuse, (or use your multimeter) turn the ignition. If it still pops, it's not that component. Reattach the connections

Once you disconnect a major component and the fuse stays intact, you have you culprit.

I'm certain there are more technical ways to do this, but this really worked out well for me.

Offline martin_uk

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  • CB750F1 CB750K8
Re: Finding a short
« Reply #1 on: September 14, 2013, 03:09:43 AM »
One way to save blowing fuses each time, is to use a light bulb with holder or wires soldered direct to feed and earth contacts, with crocodile clips on wires connecting to each side of fuse holder.

The bulb will glow bright each time the short occurs allowing you to trace problem more easily and without using up your supply of fuses  :)
CB750F1, CB750K8,  Triumph Street Triple R, AJS 350, Triumph 3TA